Arrangement for binding together packs of elongated objects such as rods and similar articles by a self-sticking band

ABSTRACT

An arrangement for binding together packs of elongated bodies by a self-sticking band whereby a turn of the self sticking band is first made around the pack while holding the free end of this band, by pressing together the sticking sides of the band after one full turn, by making a second turn after release of the end of the band, by cutting thereafter the band and pressing the free end to the earlier made binding.

Harte states Ptet 1191 1111 3,864,191 Tovarys 1 1 Feb. 4, 1975 [54] ARRANGEMENT FOR BINDING 2,807,997 10/1957 Wognum et 211. 100 27 TOGETHER PACKS 0 ELONGATED 2,837,884 6/1958 Gibbons 1 1 [00/27 3,108,033 10/1963 Carter r 156/492 OBJECTS SUCH AS RODS AND SIMILAR 3,221,641 12/1945 Adams et 61... 53/1913 R ARTICLES BY A SELF-STICKING BAND 3,331,312 7/1967 Leslie et 61 100/33 PB 75 Inventor: Zdenk Tovarfi, Ostrava, 3,418,358 12/1968 Sejda 156/468 Czechoslovakia 3,665,845 5/1972 Lyon .1 100/27 [73] Assignee: Vitkovicke zelezarny Klementa 4 G u i podnik, Ostrava, Primary Exammer-Char1es E. Van Horn h l ki Assistant ExaminerBasi1 .1. Lewns 122] Filed: Feb. 5, 1973 1 1 pp 1391329314 57 ABSTRACT An arrangement for binding together packs of elon- [52] US Cl 63 6 gated bodies by a self-sticking band whereby a turn of Int the Self Sticking band 13 first made around thfi pack [58] Field 156/185 2 213 296 while holding the free end of this band, by pressing to- 156/468 532198 6 gether the sticking sides of the band after one full 33 turn, by making a second turn after release of the end of the band, by cutting thereafter the band and press- [56] References Cited ing the free end to the earlier made binding.

UNITED STATES PATENTS 2 Claims, 6 Drawing Figures 2,387,658 10/1945 Gruber et a1. 100/27 PATENTEUFEB 41915 SHEET 3 [IF 4 In I u n nununuu m 0 PATENIED FEB M915 SHEET '4 0F 4 ARRANGEMENT FOR BINDING TOGETHER PACKS OF ELONGATED OBJECTS SUCH AS RODS AND SIMILAR ARTICLES BY A SELF-STICKING BAND BACKGROUND OF THE INVENTION This invention relates to an arrangement for binding together rods and similar articles by a multiple bandage by means of a self-sticking band.

Both packing and binding arrangements are known, using a self sticking band, whereby the individual operations in the course of binding by means of the self sticking band are performed by complicated mechanisms with lever transmissions, controlled, for instance, by cams, pinions with cams, excentrics and similar. A drawback of similar arrangements is both their complexity and necessity of an accurate working, particularly of the cams and at higher operating speeds also high forces of inertia, causing springing and overtravel of different elements. The accuracy of operating depends for cam drives of the shape of the cams, whereby a small inaccuracy or wear may affect a correct and accurate achievement of the binding. It is therefore impossible to achieve with similar arrangements high outputs in binding with sufficient reliability, so that they do not meet requirements of actual packing and binding techniques.

SUMMARY OF THE INVENTION ment for binding together packs of rods and similar objects by means of a self-sticking band, which is not affected to any high degree by inaccuracies or wear of its components.

It is another object of this invention to meet requirements of higher speeds in binding of similar arrangements.

Bearing these and other objects in mind, the arrangement according to this invention is provided with a frame, bearing a guiding trough for the material to be bound and supporting rotatably around a horizontal axis a carrier of the self sticking band, encompassing the guiding trough and in addition two arms pivotable around horizontal axis perpendicular to the guiding trough and a body ofa gripper of the self sticking band arranged below the guiding trough, the pivotable arms being situated at both sides of the guiding trough and joint linked with piston rods of first power cylinders, supported pivotably on the frame, each of said pivotable arms slidingly supporting a slide, the position of which with respect to the pivotable arms controlled by second power cylinders, such slides being provided with a first pair of opposite gripper jaws for the self sticking band, each slide bearing one ofa group ofjaws, a third power cylinder pivotably supported on the slide of the first pivotable arm, its piston rod joint being connected with a suspension and a spring loaded lever with a finishing roller joint connected with this piston rod, a fourth power cylinder supported by the second slide, the piston rod of which bearing a cutting knife of the selfsticking band, a fifth power cylinder controlling the position of the gripper body housing a second pair of gripper jaws for the self sticking band, the position of which gripper jaws with respect to the self sticking band being controlled by a sixth power cylinder and their opening and closing being controlled by a seventh power cylinder.

DESCRIPTION OF DRAWINGS An examplary embodiment of the object of this invention is shown in the attached drawings, where FIG. 1 is a schematic elevation ofthe arrangement at the start ofthe binding cycle with the self sticking band indicated in broken lines after the first revolution of the carrier of the self sticking band,

FIG. 2 is a cross sectional view of the arrangement at the start of the binding cycle taken along a plane indicated in FIG. 1 by AA.

FIG. 3 is a schematic elevation of the arrangement after the first revolution of the carrier of the self sticking band and after release of the end of the self sticking band after its gripping by both jaws,

FIG. 4 is a schematic elevation of the arrangement in the course of the final compression of the end of the self sticking band after finished binding,

FIG. 5 is a cross sectional view of the gripper in its thrust-in position in enlarged scale, the section taken along a plane, indicated in FIG. 2 by 8-8 and FIG. 6 is a schematic cross section of a pack with the finished binding in enlarged scale.

DESCRIPTION OF PREFERRED EMBODIMENT The arrangement for binding of rods and similar objects by means ofa self sticking band comprises a frame I, to which a guiding trough 2 is fixed. The frame 1 also supports a carrier 4 of the self sticking band 6 with a bracket 36 fixed to this carrier 4, supporting a hub 37 of a coil 5 of the self sticking band 6 and a guiding roller 7 of this band. The coil 5 is adapted to rotate with a resistance sufficient to maintain the self sticking band 6 stretched in the course of the binding operation. The carrier 4 of the self sticking band 6 is formed as an open ring with an external indentment and encompasses the guiding trough 2. The carrier 4 can be rotated in a vertical plane around the guiding trough 2 guided by guiding rollers 40, supported by the frame 1 and driven by two pinions 8 supported by the frame 1, which pinions are in engagement with the external indentment of the carrier 4. The pinions 8 are at a mutual distance exceeding the width of the opening of the carrier ring. Two arms 9 and 19 respectively are pivotably supported on the frame 1 on horizontal bolts with their axis perpendicular to the axis of the guiding trough 2 (see FIG. 2). These arms 9 and 19 are at both sides of the guiding trough 2. The position of the first arm 9 is controlled by the power cylinder 10, and the position of the second arm 19 is controlled by the power cylinder 20, both power cylinders 10 and 20 pivotably supported on the frame 1. A horizontal power cylinder 13 is fixed to the first arm 9, its piston rod being linked with a slide 11 guided slidingly in a guiding of the pivotable arm 9. The slide 11 is provided with ajaw l2 and carries a further power cylinder 18, the piston rod of which is joint connected with a suspended rod 15a and equally joint connected with a two arm lever 15, one end of which two arm lever 15 supporting a finishing roller 14. The end of the piston rod of the power cylinder 18 passes over onto an arm, which forms a support of a pressure spring 16, the other end of which rests against one arm of the two arm lever 15 joint connected to this piston rod. The second arm of the two arm lever is thus forced against a rest 17 fixed on the slide 11 so that the finishing roller 14 is beyond engagement with the pack 3 of rods. A horizontal power cylinder 23 is fixed to the second pivotable arm 19, its piston rod being linked with a slide 21 guided slidingly in a guiding of the pivotable arm 19 in a way similar to that of the slide 11 with respect to the first pivotable arm 9. The slide 21 bears a spring loaded jaw 22 and a power cylinder 25, the piston rod of which extends into a knife 24.

The body 26 of a gripper of the self sticking band 6 is suspended on a bracket 28 below the guiding trough 2, said body 26 being linked to the piston rod of a power cylinder 27 pivotably supported by the frame 1. The body 26 of the gripper of the self sticking band is formed by a power cylinder 35 (see FIG. 2), the piston rod of which has the shape of a hollow cylindrical bolt 29. A joint is provided within the hollow bolt 29 extending into a power cylinder 31, the piston rod of which passes through said joint terminates in an extension wedge 30 engaging between inclined faces of two symmetrically arranged gripper jaws 32 urged against the faces of the extending wedge 30 by springs 34 arranged mutually coaxially within the hollow bolt 29. The gripper jaws 32 are provided on their external side with two extensions housing between themselves a pin 33 (see FIG. arranged transverse within the hollow bolt 29 and preventing any longitudinal movement of the gripper jaws 32 with respect to the hollow bolt 29.

When starting the binding operation, the free end of the self sticking band 6 is clamped by the gripper jaws 32, whereby the coil 5 of the self sticking band 6 is supported on the hub 37 of the coil, fixed to the carrier 4 of the self sticking band 6 so that it can be wound off in a stretched condition when pulled. The self sticking band 6 is in the rest position of the carrier 4 of the self sticking band 6 guided by its rear side by a guiding roller 7 supported on a bracket 36 fixed to the carrier 4 of the self sticking band 6, whereby the pivotable arms 9 and 19 are in their turned off position.

The rods or tubes respectively, which are in the guid ing trough 2, are formed by a not shown forming device to a pack, whereafter the binding with the self sticking band 6 is started so that in the first phase of binding the carrier 4 of the self sticking band 6 is rotated for 360 in the direction of the indicated arrow, whereby one turn of the self sticking band is formed around the pack while the free end of the self sticking band 6 remains gripped by the gripper jaws 32.

In the course of the second phase, the pivotable arms 9 and 19 are turned towards the carrier 4 of the self sticking band 6 by action of the power cylinders and 20, respectively, with a following action of the power cylinders 13 and 23 which shifts the slides 11 and 21 toward each other until their jaws 12 and 22 press together both branches of the self sticking band 6 by their adhesive surfaces. In the course of a third phase, the gripper jaws 32 squeezing the free end of the self sticking band 6 are released by the action of the power cylinder 31 and of the extending wedge 30 whereafter the body 26 of the gripper of the self sticking band 6 is deviated by the action of the power cylinder 27 thus rcleasing the end of the self sticking band 6. The hollow cylindrical bolt 29 is retracted in due to pressure in the pressure cylinder 35, the body 26 of the gripper of the self sticking band 6 returns into its initial position and the pivotable arms 9 and 19 are turned back.

1n the course of the following fourth phase the carrier 4 of the self sticking band 6 makes a second rotating motion for 360 and forms a second turn of the self sticking band 6 while pressing the end earlier squeezed by the gripper jaws 32 against the already made turn of the band. In the course of the fifth phase the pivotable arms 9 and 19 are again turned so as to engage in the plane of the coil 5 of the self sticking band 6 and the power cylinders 13 and 23, and again cause the slides 11 and 21 to approach in order that the slide 11 can bring the self sticking band 6 into a vertical position and the power cylinder 25 on the slide 21 can be shifted into its working position. In the course of the sixth phase the hollow cylindrical bolt 29 with the open gripper jaws 32 is retracted and the gripper jaws 32 grip the self sticking band 6.

In the seventh phase the piston rod of the power cylinder 25 with the knife 24 is advanced and cuts the self sticking band 6 right above the closed gripper jaws 32, whereas the piston rod of the power cylinder 25 with the knife 24 and the slide 24 return to their starting position. In the course of the eighth phase the piston rod of the power cylinder 18 is advanced and the finishing roller 14, loaded by the pressure spring 16, presses the cut end of the self sticking band 6 against the binding, whereafter it returns into its starting position. In the following lastphase the slide 11 returns into its starting position and both pivotable arms 9 and 19 return to their turned-off position, finishing one working cycle.

I claim:

1. Apparatus for binding together packs of elongated objects such as rods, tubes and similar articles by a multiple bandage by means of a self sticking band comprising: a frame, a guiding trough for the elongated objects to be bound fixed on the frame, a carrier for the self sticking band encompassing the guiding trough, supported rotatably around a horizontal axis on the frame, a first pair of opposite gripper jaws for the self sticking band, a pair of arms pivotably supported on said frame, one of said arms on each side of the guiding trough, first power cylinders controlling the position of these pivotable arms, a slide slidingly guided on each of said pivotable arms, each of said slides supporting one of said gripper jaws, a second power cylinder on each of said pivotable arms controlling the position of said slide with respect to the pivotable arms, a third power cylinder pivotably supported on the slide of the first pivotable arm, the piston rod of this power cylinder pivotably connected with a suspension, a spring loaded lever with a finishing roller pivotably connected to the piston rod of this third power cylinder, a fourth power cylinder supported by the slide of the second pivotable arm, a cutting knife for the self sticking band controlled by the piston rod of this fourth cylinder, a gripper body for seizing the self sticking band suspended on the frame below the guiding trough, a fifth power cylinder controlling the position of this gripper body with respect to the frame, said gripper body housing a sixth power cylinder with a hollow piston rod and a second pair of gripper jaws for the self sticking band, the position of which with respect to the self sticking band is controlled by said sixth power cylinder, and a seventh power cylinder controlling the opening and closing of said second pair of gripper jaws.

2. Apparatus as in claim 1, wherein the seventh power cylinder and the second pair of gripper jaws are mounted in said hollow piston rod of the sixth power cylinder. 

1. Apparatus for binding together packs of elongated objects such as rods, tubes and similar articles by a multiple bandage by means of a self sticking band comprising: a frame, a guiding trough for the elongated objects to be bound fixed on the frame, a carrier for the self sticking band encompassing the guiding trough, supported rotatably around a horizontal axis on the frame, a first pair of opposite gripper jaws for the self sticking band, a pair of arms pivotably supported on said frame, one of said arms on each side of the guiding trough, first power cylinders controlling the position of these pivotable arms, a slide slidingly guided on each of said pivotable arms, each of said slides supporting one of said gripper jaws, a second power cylinder on each of said pivotable arms controlling the position of said slide with respect to the pivotable arms, a third power cylinder pivotably supported on the slide of the first pivotable arm, the piston rod of this power cylinder pivotably connected with a suspension, a spring loaded lever with a finishing roller pivotably connected to the piston rod of this third power cylinder, a fourth power cylinder supported by the slide of the second pivotable arm, a cutting knife for the self sticking band controlled by the piston rod of this fourth cylinder, a gripper body for seizing the self sticking band suspended on the frame below the guiding trough, a fifth power cylinder controlling the position of this gripper body with respect to the frame, said gripper body housing a sixth power cylinder with a hollow piston rod and a second pair of gripper jaws for the self sticking band, the position of which with respect to the self sticking band is controlled by said sixth power cylinder, and a seventh power cylinder controlling the opening and closing of said second pair of gripper jaws.
 2. Apparatus as in claim 1, wherein the seventh power cylinder and the second pair of gripper jaws are mounted in said hollow piston rod of the sixth power cylinder. 